From: Brett
>I guess I should have been more specific. What I was trying to say it that
>as I look through the parts catalogs I see one spread bore intake and
>twenty open or dual plane ones. Why? Why don't I see a whole lot of
>aluminum spread bore intakes in the summit catalog? As for the carb itself
>is there a difference between the carb that you put on top of the spread
>bore as opposed to the square or dual plane intakes?

Yes. Major, the four holes are the same size on a square bore, on a
spread bore the primaries are smaller than the secondaries, Hence the name
spread bore. Chevy used the spread bore (i.e. Q-Jet) and Ford uses a square
bore except for that one time and I'm still looking for the reference. I bet
is was around the time they had the three deuces and the duel quads. The
days of power and glory!
The spread bore offers less cfm for normal driving but step into it, you
have all 750cfm. The Q-Jet is one of the last 4bb to get blessed by the Smog
Nazis. The square bore all four are the same size.
Duel plane and single plain are different things and pertains solely to
the intake manifold. Duel plane the left and right side are at different
levels or planes. The single plane has both sides at the same level.
Hopefully someone more qualified will give a better explanation than
this.

Hello,
I'm new to the list and am glad to have found a place where I can talk to
people that understand Ford. I've got a '78 F-250 Custom 4x4 with an '87 bed
cause the rust got the original. The old one was so bad, I cut it in 3
pieces with my circular saw and took it to the dump in the new one. Someday
I hope to run into someone with a '78 ish bed to swap for my '87 (pipe
dreams).

I've got some projects rattling around in my head and wondered if anyone knew
whether the front hub/rotor assembly from a live axle (Dana 44) 1/2 ton or
full size Bronco is interchangeable with what is on the newer ones with the
IFS type front axle. It would be helpful if I could make the swap without
needing a different spindle and bearing size.

Thanks,

Ben Williams
'78 F-250
'71 Kaiser/Jeep Wagoneer

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End of fordtrucks61-79-digest V1 #298
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